We demonstrate that signals at 28.5 kHz emitted from the Naval (NAU) transmitter in Puerto Rico e ectively couple into ionospheric ducts, induced/enhanced by the Arecibo HF heater, and propagate into the conjugate hemisphere as ducted whistlers. Also presented are suspected radar detections of whistler-triggered electron precipitation events. NAU-generated whistlers have intensities su cient to...

In order to generate homogeneous high temperatures at high pressures, a ring-shaped graphite heater has been developed to resistively heat diamond-anvil cell (DAC) samples up to 1300 K. By putting the heater in direct contact with the diamond anvils, this graphite heater design features the following advantages: (1) efficient heating: sample can be heated to 1300 K while the DAC body temperatur...

An outbreak of invasive Mycobacterium chimaera infections associated with "heater-cooler" devices in patients treated with cardiac surgery has been described worldwide. The authors summarize the current state of knowledge regarding the epidemiology, diagnostics, treatment, and prevention of Mycobacterium chimaera infections in patients after cardiothoracic surgery.

The solubility of fluorinated refrigerants in lubrication oil affects not only the stability performance of vapor compression refrigeration system, but also the safety control of start~up. It can cause oil foaming and reduction of viscosity, resulting in liquid slugging and improper lubrication. To void the deleterious effects, an oil heater is often used. But improper heater power can cause oi...

We propose a right triangular prism-shaped microdevice with serpentine microchannels fabricated on its slanted plane, and apply the device for on-chip flow-through PCR employing a single heater. The inclined nature of the qiandu-shaped microdevice enables the formation of a surface temperature gradient along the slanted plane of the microchannel by the use of a single heater. A 409 bp lung canc...

Natural convection heat transfer from a tube bundle in the indirect water bath heaters is investigated. A computer-code is used for the solution of the governing equations of mass, momentum and energy transfer based on the SIMPLE-C algorithm. Simulations are carried out for the gas pressure station heater of Kermanshah city with various tube bundle arrangements. In order to validate the numeric...

BACKGROUND Molecular assays targeted to nucleic acid (NA) markers are becoming increasingly important to medical diagnostics. However, these are typically confined to wealthy, developed countries; or, to the national reference laboratories of developing-world countries. There are many infectious diseases that are endemic in low-resource settings (LRS) where the lack of simple, instrument-free, ...

We utilize a low-cost, robust method of wavelength locking microring resonators to implement a simplified platform for microring-sensing applications that requires only a singlewavelength laser source and directly maps resonance shifts to DC voltage values. OCIS codes: (280.4788) Optical sensing and sensors; (280.1415) Biological sensing and sensors. With their small footprint, CMOS-compatible ...

Measurements of space and time resolved subcooled pool boiling of FC-72 in low, earth, and high gravity environments were made using a microscale heater array. Data from each heater in the array were synchronized with highspeed digital video. The boiling behavior was dominated by the formation of a large primary bubble on the surface which acted as a ‘‘sink’’ for many smaller bubbles surroundin...

A mathematical model for computing the thermal performance of an air heater with a truncated compound parabolic concentrator having a flat one-sided absorber is presented. A computer code that employs an iterative solution procedure is constructed to solve the governing energy equations and to estimate the performance parameters of the collector. The effects of the air mass flow rate, the wind ...